Fix Google OAuth redirect URI mismatch error

- Added detailed instructions in config file for updating Google Cloud Console
- Current redirect URI: https://upskill-staging.measurequick.com/google-sheets/
- Production redirect URI: https://upskillhvac.com/google-sheets/
- Updated config comments with step-by-step OAuth setup guide

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

wordpress-dev/.gitignore

@@ -52,6 +52,9 @@ Thumbs.db
 .env.local
 .env.*
 
+# Google Sheets API credentials (contains sensitive OAuth secrets)
+/wordpress/wp-content/plugins/hvac-community-events/includes/google-sheets/google-sheets-config.php
+
 # Logs
 *.log
 logs/

wordpress-dev/wordpress/wp-content/plugins/hvac-community-events/includes/class-hvac-community-events.php

@@ -793,6 +793,13 @@ class HVAC_Community_Events {
 	 * Initialize Google Sheets integration
 	 */
 	private function init_google_sheets() {
+		// Always initialize auth handler for OAuth callbacks
+		if (file_exists(HVAC_CE_PLUGIN_DIR . 'includes/google-sheets/class-google-sheets-auth.php')) {
+			require_once HVAC_CE_PLUGIN_DIR . 'includes/google-sheets/class-google-sheets-auth.php';
+			new HVAC_Google_Sheets_Auth();
+		}
+		
+		// Initialize admin interface
 		if (file_exists(HVAC_CE_PLUGIN_DIR . 'includes/google-sheets/class-google-sheets-admin.php')) {
 			require_once HVAC_CE_PLUGIN_DIR . 'includes/google-sheets/class-google-sheets-admin.php';
 			new HVAC_Google_Sheets_Admin();

wordpress-dev/wordpress/wp-content/plugins/hvac-community-events/includes/google-sheets/class-google-sheets-admin.php

@@ -49,6 +49,21 @@ class HVAC_Google_Sheets_Admin {
                     </div>
                 </div>
                 
+                <!-- Success/Error Messages -->
+                <?php if (isset($_GET['auth_success']) && $_GET['auth_success'] == '1'): ?>
+                <div class="hvac-alert hvac-alert-success">
+                    <i class="hvac-icon-check"></i>
+                    <strong>Success!</strong> Google Sheets authorization completed successfully! You can now create reports.
+                </div>
+                <?php endif; ?>
+                
+                <?php if (isset($_GET['auth_error']) && $_GET['auth_error'] == '1'): ?>
+                <div class="hvac-alert hvac-alert-error">
+                    <i class="hvac-icon-warning"></i>
+                    <strong>Error:</strong> <?php echo esc_html($_GET['message'] ?? 'Failed to complete Google Sheets authorization.'); ?>
+                </div>
+                <?php endif; ?>
+                
                 <!-- Connection Status -->
                 <div class="hvac-card">
                     <div class="hvac-card-header">

wordpress-dev/wordpress/wp-content/plugins/hvac-community-events/includes/google-sheets/class-google-sheets-auth.php

@@ -44,6 +44,9 @@ class HVAC_Google_Sheets_Auth {
         
         // Load stored access token from WordPress options
         $this->load_access_token();
+        
+        // Register callback handler
+        add_action('init', array($this, 'handle_oauth_callback'));
     }
     
     /**
@@ -337,4 +340,39 @@ class HVAC_Google_Sheets_Auth {
             'folder_id' => $this->folder_id
         );
     }
+    
+    /**
+     * Handle OAuth callback from Google
+     */
+    public function handle_oauth_callback() {
+        // Check if this is an OAuth callback request to the Google Sheets page
+        if (isset($_GET['code']) && isset($_GET['scope']) && 
+            (strpos($_SERVER['REQUEST_URI'], '/google-sheets/') !== false || 
+             strpos($_SERVER['REQUEST_URI'], 'google-sheets') !== false)) {
+            
+            $auth_code = sanitize_text_field($_GET['code']);
+            
+            if (class_exists('HVAC_Logger')) {
+                HVAC_Logger::info("Processing OAuth callback with code: " . substr($auth_code, 0, 20) . "...", 'GoogleSheets');
+            }
+            
+            // Exchange the authorization code for tokens
+            $success = $this->exchange_code_for_tokens($auth_code);
+            
+            if ($success) {
+                // Redirect to Google Sheets admin page with success message (clean URL)
+                wp_redirect(add_query_arg(array(
+                    'auth_success' => '1'
+                ), home_url('/google-sheets/')));
+                exit;
+            } else {
+                // Redirect to Google Sheets admin page with error message
+                wp_redirect(add_query_arg(array(
+                    'auth_error' => '1',
+                    'message' => urlencode($this->get_last_error())
+                ), home_url('/google-sheets/')));
+                exit;
+            }
+        }
+    }
 }

wordpress-dev/wordpress/wp-content/plugins/hvac-community-events/templates/template-google-sheets.php

@@ -27,6 +27,29 @@ get_header(); ?>
     padding: 20px;
 }
 
+/* Alert styles */
+.hvac-alert {
+    padding: 15px;
+    margin-bottom: 20px;
+    border-radius: 6px;
+    border-left: 4px solid;
+    display: flex;
+    align-items: center;
+    gap: 10px;
+}
+
+.hvac-alert-success {
+    background-color: #d4edda;
+    border-left-color: #28a745;
+    color: #155724;
+}
+
+.hvac-alert-error {
+    background-color: #f8d7da;
+    border-left-color: #dc3545;
+    color: #721c24;
+}
+
 .hvac-status-grid {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));